Machine for molding artificial stone.



No. 7|o,995.

Patented Oct. I4, |902.

N. F. PALMER. MACHINE FOB HOLDING ARTIFICIAL STONE.

(Application led June 26, 1902.)

(No Model.)

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No.'7|ov,995. Patented not. I4, |902. N. F. PALMER.

MACHINE FUR MULDING ARTIFICIAL STONE.

Application led June 26, 1902,)

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N0. 7|0,995. Patented Oct. I4, `|902. N. F. PALMER.

MACHINE FDR HOLDING ARTIFICIAL'STUNE.

(Application led. June 28, 1902.) (No Model.) v 3 Sheets-$heet 3.v

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UNITED STATES PATENT OFFICE.

NOYESF. PALMER, OF BROOKLYN, NEW YORK.

MACHINE FOR MOLDING ARTIFICIAL STONE.

bPECIFICATION forming part of Letters Patent No. 710,995, dated October 14, 1902.

Application tiled .Time 26,1902.

fo fZ/Z whom, it muy concern:

Beit known that l, NOYES F. PALMER,a citizen of the United States, and a resident of Brooklyn, county of Kings, and State of New York, have invented certain new and useful lmprovements in Machines for Molding Artificial Stone, of which the following is a specification.

This invention relates to an improved machine for molding artificial stone which is so constructed that the operating mechanism is simple and reliable and that it is not apt to become clogged by the cement.

In the accompanying drawings, Figure l is a plan of my improved machine; Fig. 2, a side elevation; Fig. 3, an end elevation; Fig. 4, a detail of the mechanism (looking upward) for opening and closing he mold; Fig. 5, a side view of the core; Fig. 6, an end view thereof; Fig. 7, a detail of the lifters, and Fig. 8 a detail of the levers for operating the lifters.

The letter @represents the frame of the niachine, provided with a bed-plate a', that constitutes the bottom of the mold within which the blocks are shaped. This mold is provided with sliding sides b and sliding ends c, secu red to slides ZJ c', respectively, that are guided within slots of bed-plate d. lThe connection between the sides b c and slides b c is rendered adjustable by screws h2 c2 and a numloer of perforations h3 c3, so that the size of the mold may be altered.

The means for expanding and contracting the mold consist of a pair of disks CZ, suspended from base-plate d' near each end of the mold and turning on shafts CZ. Each of the disks (Z is connected near its periphery to both of the slides h by pivoted links e and to but one of the slides c by a pivoted linkf. Thus each side b is operated by both disks, while the ends c are each operated by but a single disk. The disks are connected with each other by rods (Z2, and one of the disks is provided with a toothed segment engaged by the worm-shaft g of handle g'. lf the handle is turned in one direction, the disks will be turned until all the links ef project radially outward when the mold is open. A turning of the handle in the opposite direction folds the links and closes the mold, Fig. 4.

The advantage of the mechanism described Serial No. 113,259. (No model.)

is that it operates positively without gearing and that it is not apt to become clogged by cement. Each disk CZ constitutes, in effect, three inner toggle-lever arms, of-which the links c e j' are the outer arms.

rlo shape hollow blocks, the mold contains one or more cores h, mounted upon a common support Zt', which is received within a corresponding opening of base-plate d', Fig. The support ZL is provided with bent per'- forated arms h2, guided upon shafts d. A false bottom @perforated to accommodate the cores,is placed within the mold and is adapted to be raised while the cores are beinglowered, so that the fresh block may he lifted clear of the mold.

The mechanism for simultaneously operating the cores and false bottom consists of a handle j, turning a worm-shaft j', which engages worm-wheel Zt" of shaft k. Upon shaft 71; is mounted pinion k2,intergeared with rack Z, that projects downward from core-plate ZL'. The rack Z is provided with pins Z', engaging longitudinal slots m' of a pair of forked inner lever-arms on, keyed to rock-shafts n, that turn in bearings n'. To each of the rockshafts n are connected a pair of forked outer lever-arms o, having longitudinal slots o. These slots engage pins p' of lifters p, that extend through perforations a3 of base-plate a into engagement with the false bottom 7'.. When the handle j is turned in one direction, the rack Z will be drawn down to lower the cores, and the lifters will be simultaneously raised by the lever-arms m o to elevate the false bottom and raise the moldedblock out of the mold. l/Vhen the handle is turned in the opposite direction, the cores will be raised and the false bottom lowered, so that the mold may be filled with a fresh charge.

Vhat I claim isl. In a machine for molding artificial stone, the combination of a mold having sliding sides and ends, with a pair of disksand with links that connect said disks to said sides and ends, substantially as specified.

2. In a machine for molding artificial stone, the combination of a mold having sliding sides and ends, with a pair of disks rotatably mounted near each end of the mold, links that connect said disks to said sides and ends, .means for connecting the disks with each IOC other, and means for actuating one of said lpair of actuating-lifters, a rock-shaft, and

disks, substantially as specified. slotted lever-arms that connect said rock- 3. In a machine for molding artificial stone, shaft to said rack and lifters, substantially the combination of a movable core with an as specified.

actuating-rack, a movable false bottom, an Signed by me at New York city, New York,

actuating-lifter, and levers operatively conthis 25th day of June, 1902.

meeting said lifter to said rack, substantially as Spedi-led. NOYES F. PALMER.

4. In a machine for moldingT artificial stone,

the combination of a movable core with an actuating-rack, a movable false bottom, a

Witnesses:

F. v. BRIESEN, WILLIAM SCHULZ. 

